Seqanswers Leaderboard Ad

Collapse

Announcement

Collapse
No announcement yet.
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • CASAVA v1.8 with indels

    My Settings :

    Biology : GAIIx, SureSelect capture, paired-end 2x76 with "in house" indexing

    BioInformatics : CASAVA v1.8 with ELANDv2, GenomeStudio

    My problem :

    One patient had a deletion (/ GCTGAG /) and an insertion (TTCATTCTGCAG) Del6ins12 in a "complicated" (See Illumina ) because there are a repetition before. At present, CASAVA v1.8 and therefore does not detect ELANDv2 (not reported!) a variation at this level .

    Do you know of a program (software, algorithms) that could detect such an anomaly?

    My sequence :

    agcttcttaggacagcacttcctgattttgttttcaacttctaatcctttgagtgtttttcattctgcagAT/GCTGAG/TTTGTGTGTGAACGGACACTGAAATATTTTCTAGGAATTGCGGGAGGAAAATGGGTAGTTAGCTATTTCTgtaag

    Also, is it possible to make the annotation (exon, intron, capture zones, etc.) in GenomeStudio?

    Thanks,

  • #2
    Try bwa for alignment, and either samtools or GATK for variant calling. I've found 7 base deletions fine with bwa+samtools.

    Comment


    • #3
      Originally posted by tonio100680 View Post
      My Settings :

      Biology : GAIIx, SureSelect capture, paired-end 2x76 with "in house" indexing

      BioInformatics : CASAVA v1.8 with ELANDv2, GenomeStudio

      My problem :

      One patient had a deletion (/ GCTGAG /) and an insertion (TTCATTCTGCAG) Del6ins12 in a "complicated" (See Illumina ) because there are a repetition before. At present, CASAVA v1.8 and therefore does not detect ELANDv2 (not reported!) a variation at this level .

      Do you know of a program (software, algorithms) that could detect such an anomaly?

      My sequence :

      agcttcttaggacagcacttcctgattttgttttcaacttctaatcctttgagtgtttttcattctgcagAT/GCTGAG/TTTGTGTGTGAACGGACACTGAAATATTTTCTAGGAATTGCGGGAGGAAAATGGGTAGTTAGCTATTTCTgtaag

      Also, is it possible to make the annotation (exon, intron, capture zones, etc.) in GenomeStudio?

      Thanks,
      CASAVA is getting better, but it's still not as good as BWA/Stampy/Novoalign + GATK

      see nature proceedings paper (still a work in progress and not peer reviewed!):

      Comment


      • #4
        Right now Dindel is probably your best bet when it comes to indels.

        Comment

        Latest Articles

        Collapse

        • seqadmin
          Current Approaches to Protein Sequencing
          by seqadmin


          Proteins are often described as the workhorses of the cell, and identifying their sequences is key to understanding their role in biological processes and disease. Currently, the most common technique used to determine protein sequences is mass spectrometry. While still a valuable tool, mass spectrometry faces several limitations and requires a highly experienced scientist familiar with the equipment to operate it. Additionally, other proteomic methods, like affinity assays, are constrained...
          04-04-2024, 04:25 PM
        • seqadmin
          Strategies for Sequencing Challenging Samples
          by seqadmin


          Despite advancements in sequencing platforms and related sample preparation technologies, certain sample types continue to present significant challenges that can compromise sequencing results. Pedro Echave, Senior Manager of the Global Business Segment at Revvity, explained that the success of a sequencing experiment ultimately depends on the amount and integrity of the nucleic acid template (RNA or DNA) obtained from a sample. “The better the quality of the nucleic acid isolated...
          03-22-2024, 06:39 AM

        ad_right_rmr

        Collapse

        News

        Collapse

        Topics Statistics Last Post
        Started by seqadmin, 04-11-2024, 12:08 PM
        0 responses
        27 views
        0 likes
        Last Post seqadmin  
        Started by seqadmin, 04-10-2024, 10:19 PM
        0 responses
        30 views
        0 likes
        Last Post seqadmin  
        Started by seqadmin, 04-10-2024, 09:21 AM
        0 responses
        26 views
        0 likes
        Last Post seqadmin  
        Started by seqadmin, 04-04-2024, 09:00 AM
        0 responses
        52 views
        0 likes
        Last Post seqadmin  
        Working...
        X